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Elastic Moduli Video Lecture | Physics for JEE Main & Advanced
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FAQs on Elastic Moduli Video Lecture - Physics for JEE Main & Advanced
| 1. What is the definition of elastic moduli? |  |
Ans. Elastic moduli, also known as modulus of elasticity or Young's modulus, are measures of a material's stiffness or resistance to deformation when subjected to an applied force or stress. It quantifies the relationship between stress and strain in a material.
| 2. What are the different types of elastic moduli? | |
Ans. There are three main types of elastic moduli: Young's modulus (E), shear modulus (G), and bulk modulus (K). Young's modulus measures the ratio of stress to strain in the direction perpendicular to the applied force. Shear modulus measures the ratio of shear stress to shear strain, while bulk modulus measures the ratio of volumetric stress to volumetric strain.
| 3. How is Young's modulus calculated? | |
Ans. Young's modulus (E) is calculated by dividing the stress (force per unit area) applied to a material by the strain (change in length per unit length) experienced by the material. Mathematically, it is expressed as E = stress/strain.
| 4. What factors affect the elastic moduli of a material? | |
Ans. The elastic moduli of a material are influenced by various factors, including the type of material, its atomic or molecular structure, temperature, and the presence of impurities or defects. For example, materials with strong intermolecular or intramolecular forces tend to have higher elastic moduli.
| 5. How are elastic moduli important in engineering and materials science? | |
Ans. Elastic moduli play a crucial role in engineering and materials science. They help engineers and scientists understand the mechanical behavior of materials under different loading conditions. This knowledge is essential for designing structures, predicting material failure, and selecting appropriate materials for specific applications. Elastic moduli also provide insights into the physical properties of materials and can be used to compare and classify different materials based on their stiffness.
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Nov 15, 2024 Last updated |
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